2 arkfb - fbdev driver for ARK Logic chips
3 ========================================
12 - only BIOS initialized VGA devices supported
13 - probably not working on big endian
19 * 4 bpp pseudocolor modes (with 18bit palette, two variants)
20 * 8 bpp pseudocolor mode (with 18bit palette)
21 * 16 bpp truecolor modes (RGB 555 and RGB 565)
22 * 24 bpp truecolor mode (RGB 888)
23 * 32 bpp truecolor mode (RGB 888)
24 * text mode (activated by bpp = 0)
25 * doublescan mode variant (not available in text mode)
26 * panning in both directions
27 * suspend/resume support
29 Text mode is supported even in higher resolutions, but there is limitation to
30 lower pixclocks (i got maximum about 70 MHz, it is dependent on specific
31 hardware). This limitation is not enforced by driver. Text mode supports 8bit
32 wide fonts only (hardware limitation) and 16bit tall fonts (driver
33 limitation). Unfortunately character attributes (like color) in text mode are
34 broken for unknown reason, so its usefulness is limited.
36 There are two 4 bpp modes. First mode (selected if nonstd == 0) is mode with
37 packed pixels, high nibble first. Second mode (selected if nonstd == 1) is mode
38 with interleaved planes (1 byte interleave), MSB first. Both modes support
39 8bit wide fonts only (driver limitation).
41 Suspend/resume works on systems that initialize video card during resume and
42 if device is active (for example used by fbcon).
49 * secondary (not initialized by BIOS) device support
53 * interlaced mode variant
54 * support for fontwidths != 8 in 4 bpp modes
55 * support for fontheight != 16 in text mode
57 * vsync synchronization
58 * feature connector support
59 * acceleration support (8514-like 2D)
65 * character attributes (and cursor) in text mode are broken
68 Ondrej Zajicek <santiago@crfreenet.org>